Powertrain including input disconnect and accessory drive system for an electrically variable transmission

a technology of input disconnect and accessory drive system, which is applied in the direction of electric propulsion mounting, transportation and packaging, gearing, etc., can solve the problems of lack of mechanical point, steep grade and inability to sustain high-average cruising speed at desired high efficiency, and even small apus and even large energy storage device cannot accommodate high-average power vehicles
US7282003B2Inactive Publication Date: 2007-10-16GM GLOBAL TECH OPERATIONS LLC
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Patents(United States)
Current Assignee / Owner
GM GLOBAL TECH OPERATIONS LLC
Publication Date
2007-10-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

A vehicle powertrain includes an engine connected to an input torque device including a torque isolator. A plurality of intermeshed accessory drive gears are connected to the torque device for driving accessories. A hybrid electromechanical transmission is connected to one of the accessory drive gears. A motor / generator of the hybrid electromechanical transmission is operable to drive the accessory drive gears when the engine is not running.
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Description

TECHNICAL FIELD

[0001] The present invention relates to an input disconnect and accessory drive system for an electrically variable transmission in a powertrain wherein accessory drive gears are connected between an electrically variable transmission and an engine such that accessories may be driven by an electric motor in the transmission when the engine is not running.BACKGROUND OF THE INVENTION

[0002] The purpose of a vehicular transmission is to provide a neutral, at least one reverse and one or more forward driving ranges that impart power from an engine, and / or other power sources, to the drive members which deliver the tractive effort from the vehicle to the terrain over which the vehicle is being driven. As such, the drive members may be front wheels, rear wheels or a track, as required to provide the desired performance.

[0003] A series propulsion system is a system in which energy follows a path from an engine to an electric storage device and then to an electrical motor which a...

Claims

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